The Rosy Boa (Lichanura trivirgata) is a snake of the Boidae family, one of only two members of that family native to the United States. The other is the Rubber Boa (C. bottae). Rosy Boas are native to the American Southwest, and Baja and Sonora Mexico. These small attractive snakes attain a length of 39 in (1 m) (though some specimens from the coast of California reach 4 feet) and a large adult has a body width about the diameter of a golf ball. Coloration in Rosy Boas is highly variable.